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Freeze-up protection or high-pressure control

Freeze-up protection or high-pressure control activated

Daikin · FTXF-D

What does Freeze-up protection or high-pressure control mean?

The unit has activated its protection against freezing or excessively high pressure. This often occurs in heating or cooling modes.

Common Causes

  • Blocked airflow
  • Low outdoor temperature during heating
  • Dirty air filters

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check and clean the air filters if they are dirty.

  2. 2

    Ensure there are no obstructions blocking airflow to the indoor or outdoor unit.

  3. 3

    If the issue persists, contact your installer.

Browse all codes in this manual (32)
Verified technical data. Last updated: April 2026

Related Faults

4-way valve abnormality4-way valve abnormalityBeepSingle beep - Setting changesBeep-beepTwo beeps - Operation starts
Source: Daikin FTXF-D
Open Manual (Page 12)Search more codes in this manual